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BMS development for 4S1P Battery pack

$750-1500 USD

Closed
Posted about 6 years ago

$750-1500 USD

Paid on delivery
Hello, I am looking for an experienced freelancer to develop a BMS for a 4S1P battery pack (18650 Lithium-ion battery composed of Samsung INR18650-35E). The main functionalities will be: _ Charger; _ Protection (temperature, over-current, overvoltage, short-circuit); _ Balancing. No communication bus will go from the BMS to the main electronics. The BMS will have to work in standalone. The output voltage will not be modified (no DC/DC converter). The freelancer will have to develop the schematic, do the PCB routing and prototype the BMS. More info (dimensions, form factor, voltage) will be provided to the short-listed freelancer. Project duration will be 6 weeks. Please read carefully the project description before applying. I will answer only to freelancer sending questions about the project and not to automatic bots.
Project ID: 16166339

About the project

16 proposals
Remote project
Active 6 yrs ago

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16 freelancers are bidding on average $1,212 USD for this job
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Hi I am experienced electronics engineer with more than 8 years of experience. I have completed over 220 projects and have worked on BMS before, Please review my profile and let me know if you are interested in working with me Regards
$2,500 USD in 30 days
4.9 (258 reviews)
8.0
8.0
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Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent welding power supplies design, high frequency transformers design, solar grid tie transformers, electrical vehicles design, circuits design, multi-channel LED Drivers, Regulated power supplies design with universal input to DC output, Audio amplifier, drives design, Filters design for harmonic analysis and Power factor correction, SMPS, LED drivers, DC-DC, AC-DC converters design, PFC interleaved boost converter, Battery management system, Battery chargers, UPS design, sine wave Inverters, solar grid tie inverters, Solar battery chargers and street light systems design from few watts to KW range using Buck, Boost, and Buck –boost, Interleaved boost/buck, Fly back Push Pull and H-bridge inverters. I have very good experience to design high voltage power supplies up to 50KV for capacitor charging power supplies using soft switching topologies. I have work experience to design from few watts to KW range meeting all compliances like EMI/EMC and safety standards UL etc.
$2,222 USD in 50 days
4.9 (61 reviews)
6.7
6.7
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Hi Sir, We have already developed the BMS systems for hybrid bikes that use the 18650 battery cells. We are very expert team who can develop you such systems, our design will include all kind of protections, current sensing, charge balancing, fault identification etc. Please talk to us on this. We are professional engineers and developers who do such projects from the last eight years. We offer you our skills for this project at very low rates comparatively without compromising the quality of work. Let me introduce you to our company TURKTRONICS. We are TURKTRONICS. We are professionals with 8+ years of experience in Circuit designs, PCB designs, embedded system solutions, mobile app development, programming and software development. We provide complete end to end solutions for all kind of development projects. IOT is our strong point. In this bid, prototyping and shipping cost is not included however paying extra slight of money to include prototypes. We have collaboration with Atechcircuits & WELLS Inc in Shenzhen China for excillent quality PCB manufacturing. We care about our clients and help them to get out of any potential problem throughout the projects and also give post completion technical support if ever required. We are very much looking forward to hear from you on this in coming days! Cheers!!! Ahmad Lead Technical Engineer TURKTRONICS An Internet of Things Company !
$750 USD in 12 days
4.9 (48 reviews)
6.7
6.7
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Hello my friend. I'm experienced harware engineer. Several years ago I took part in the creation of an electric car for Formula Student competitions and faced with BMS system. There were very large currents and voltages. The main question: what prevents you choose a ready-made BMS? You wrote that one of the tasks would be charging. You mean the control of charge or you want a whole charger? Another question is what type of load do you plan to use? This is important because if the load has a large capacity, then it is desirable to add a precharging circuit. I set the minimum price only because I can not yet fully appreciate the scale of the work.
$833 USD in 42 days
4.6 (4 reviews)
7.2
7.2
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A proposal has not yet been provided
$755 USD in 5 days
4.8 (57 reviews)
6.0
6.0
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Hello, Greetings of Peace! This seems to be Lithium ion battery which I have already worked with. I have created many circuits using the battery. With BMS, I consider it to be battery management system. I have been designing many industrial solutions and can give you the best optimised work with quality work. Let's connect and do it together. Best Regards, BK Krunal
$1,000 USD in 20 days
4.9 (28 reviews)
5.9
5.9
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Hello. I am electronics engineer and I have experience designing battery charging circuits. I would suggest using TI battery charging ICs for this. My quote include the prototyping cost also. You can search my upwork profile also where you will find related projects done by me. Let me know if you are interested. Thanks
$888 USD in 20 days
5.0 (11 reviews)
5.2
5.2
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Hello, I am very interested in this project. Actually, my team has already designed few BMS products in the past (battery banks, BMS+bust converter, buck+BMS). Our team is consisted of embedded/analog engineers, PCB designers and product designers. This team managed to finish more than 140 projects in 2017 thus, we are confident that we can help you. As I said, we can produce: Ciruit/PCB design Firmware Prototype of the PCB's Enclosure design Please do not hesitate to ask anything. I will be glad to answer
$1,000 USD in 40 days
5.0 (1 review)
3.9
3.9
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Can provide full design for your application, from concept, design, prototype implementation, production version prototype. We have experience in dfm.
$1,333 USD in 45 days
5.0 (4 reviews)
3.8
3.8
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Hello. Give me more details and I will be glad to start work on your project if it possible. I have experience with custom hardware design/prototyping and MCU firmware development.
$1,250 USD in 20 days
4.7 (10 reviews)
3.7
3.7
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Hi I have a start-up on Electric cycles and I can definitely take this up. Can you elaborate on the requirements ?
$1,111 USD in 40 days
0.0 (0 reviews)
0.0
0.0
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I have potential and punctual towards work Relevant Skills and Experience To protect charge.
$1,250 USD in 20 days
0.0 (0 reviews)
0.0
0.0
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Hi, I have 15 years experience in electronics systems design and development and would love to work on this 4s1p BMS project. please contact. regaards, Ali Khurram
$1,250 USD in 10 days
0.0 (1 review)
0.0
0.0
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hello, I have similar past work experience. I am a professional with 8 years experience and master's degree holder. I am bidding the least possible rate to win this project and able to add value to my young profile . please let me know if you have any issues with TI BMS systems ? I work with Altium designer Regards, Awais
$750 USD in 30 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of FRANCE
Aix en Provence, France
5.0
6
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Member since Jan 5, 2016

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